Explanation: Stomata is used for plant respiration.it is the process of fundamental to life on earth. GAS FLUXES and PLANT PRODUCTIVITY depend on external factors such as light,water and CO2 avalability and on the geometrical properties of the stoma pores.
The planets and other heavenly bodies are attracted towards the earth by the earth's gravity. The pull which is formed by the gravity of earth holds the objects near the earth surfaces. The planets and atmosphere is also kept around the earth's surface by the gravity.
